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package cryptolearning;

import com.sun.rave.web.ui.appbase.AbstractFragmentBean;
import com.sun.webui.jsf.component.StaticText;
import core.ExMath;
import javax.faces.FacesException;
import javax.faces.component.html.HtmlInputText;
import javax.swing.JOptionPane;

import logarithm.PrimeGen;
import core.ExtraException;

/**
 * <p>Fragment bean that corresponds to a similarly named JSP page
 * fragment.  This class contains component definitions (and initialization
 * code) for all components that you have defined on this fragment, as well as
 * lifecycle methods and event handlers where you may add behavior
 * to respond to incoming events.</p>
 *
 * @version Shamir.java
 * @version Created on 28.3.2009, 10:34:39
 * @author jirka
 */

public class Shamir extends AbstractFragmentBean {
    // <editor-fold defaultstate="collapsed" desc="Managed Component Definition">

    /**
     * <p>Automatically managed component initialization. <strong>WARNING:</strong>
     * This method is automatically generated, so any user-specified code inserted
     * here is subject to being replaced.</p>
     */
    private void _init() throws Exception {
    }
    private HtmlInputText txtP = new HtmlInputText();

    public HtmlInputText getTxtP() {
        return txtP;
    }

    public void setTxtP(HtmlInputText hit) {
        this.txtP = hit;
    }
    private HtmlInputText txtQ = new HtmlInputText();

    public HtmlInputText getTxtQ() {
        return txtQ;
    }

    public void setTxtQ(HtmlInputText hit) {
        this.txtQ = hit;
    }
    private StaticText labN1 = new StaticText();

    public StaticText getLabN1() {
        return labN1;
    }

    public void setLabN1(StaticText st) {
        this.labN1 = st;
    }
    private StaticText labB1 = new StaticText();

    public StaticText getLabB1() {
        return labB1;
    }

    public void setLabB1(StaticText st) {
        this.labB1 = st;
    }
    private HtmlInputText txtM = new HtmlInputText();

    public HtmlInputText getTxtM() {
        return txtM;
    }

    public void setTxtM(HtmlInputText hit) {
        this.txtM = hit;
    }
    private StaticText labHash = new StaticText();

    public StaticText getLabHash() {
        return labHash;
    }

    public void setLabHash(StaticText st) {
        this.labHash = st;
    }
    // </editor-fold>

    public Shamir() {
    }

    /**
     * <p>Callback method that is called whenever a page containing
     * this page fragment is navigated to, either directly via a URL,
     * or indirectly via page navigation.  Override this method to acquire
     * resources that will be needed for event handlers and lifecycle methods.</p>
     * 
     * <p>The default implementation does nothing.</p>
     */
    @Override
    public void init() {
        // Perform initializations inherited from our superclass
        super.init();
        // Perform application initialization that must complete
        // *before* managed components are initialized
        // TODO - add your own initialiation code here
        
        
        // <editor-fold defaultstate="collapsed" desc="Visual-Web-managed Component Initialization">
        // Initialize automatically managed components
        // *Note* - this logic should NOT be modified
        try {
            _init();
        } catch (Exception e) {
            log("Page1 Initialization Failure", e);
            throw e instanceof FacesException ? (FacesException) e: new FacesException(e);
        }
        
        // </editor-fold>
        // Perform application initialization that must complete
        // *after* managed components are initialized
        // TODO - add your own initialization code here
    }

    /**
     * <p>Callback method that is called after rendering is completed for
     * this request, if <code>init()</code> was called.  Override this
     * method to release resources acquired in the <code>init()</code>
     * resources that will be needed for event handlers and lifecycle methods.</p>
     * 
     * <p>The default implementation does nothing.</p>
     */
    @Override
    public void destroy() {
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected SessionBean1 getSessionBean1() {
        return (SessionBean1) getBean("SessionBean1");
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected ApplicationBean1 getApplicationBean1() {
        return (ApplicationBean1) getBean("ApplicationBean1");
    }

    public String btnRad_action() {
        // 1) nacte vstupni hodnoty
        Integer p, q, n, b, m, hash;
        try
        {
            p = Integer.parseInt(txtP.getValue().toString());
            q = Integer.parseInt(txtQ.getValue().toString());
            
            if (!PrimeGen.isPrime(p) || !PrimeGen.isPrime(q))
                throw new ExtraException("Zadaná čísla nejsou prvočísla");

            n = p*q;
            b = ExMath.LCM(p-1, q-1);
            //hash = b^x mod n; - pocita supermodulo
            //hash = ExMath.myExp(b, x) % n;

            labN1.setText(n.toString());
            labB1.setText(b.toString());
            
        }
        catch (ExtraException e)
        {
            JOptionPane.showMessageDialog(null, e.toString());
        }
        catch (Exception e)
        {
            JOptionPane.showMessageDialog(null, "Chybná vstupní data.");
        }
        return null;
    }

    public String btnHash_action() 
    {
         Integer p, q, b, m;
         Double hash = 0.0;
        try
        {
            p = Integer.parseInt(txtP.getValue().toString());
            q = Integer.parseInt(txtQ.getValue().toString());

            if (!PrimeGen.isPrime(p) || !PrimeGen.isPrime(q))
                throw new ExtraException("Zadaná čísla nejsou prvočísla");

            b = ExMath.LCM(p-1, q-1);

            m = Integer.parseInt(txtM.getValue().toString());
            hash = ExMath.myExp(b, m);
        }
         catch (ExtraException e)
        {
            JOptionPane.showMessageDialog(null, e.toString());
        }
        catch (Exception e)
        {
            JOptionPane.showMessageDialog(null, "Chybná vstupní data.");
        }

        labHash.setText(hash.toString());
        return null;
    }

}
